Button anchor link not linking on mobile only but works on desktop

Hi there,

Would someone please help me figure this out? I have these ‘register now’ buttons on my page 8elm.site The buttons should link with a custom url link (#register) to my registration form in the same page where I put a custom anchor link (register). They do work perfectly on desktop, and tablet but not on mobile cell phones. My Menu custom links to same page also not working on mobile. Please advise. Your help is greatly appreciated.

Thank you!

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